Quantitative Aptitude - Arithmetic Ability Questions

Q:

α and β are the roots of quadratic equation. If α + β = 8 and α – β = 2√5, then which of the following equation will have roots α4 and β4?

A) x2 – 1522x + 14641 = 0 B) x2 + 1921x + 14641 = 0
C) x2– 1764x + 14641 = 0 D) x2+ 2520x + 14641 = 0
 
Answer & Explanation Answer: A) x2 – 1522x + 14641 = 0

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Filed Under: Simplification
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Q:

On dividing a number by 38, we get 70 as quotient and 12 as remainder. What is the number?

A) 2648 B) 2636
C) 2684 D) 2672
 
Answer & Explanation Answer: D) 2672

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Q:

In the following question, select the odd number pair from the given alternatives.

A) 1444 – 37 B) 2809 – 54
C) 2209 – 46 D) 6084 – 77
 
Answer & Explanation Answer: B) 2809 – 54

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Filed Under: Odd Man Out
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Q:

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in x-axis to (-3,4). The co-ordinates of point R are

A) (3,4) B) (-3,-4)
C) (-3,4) D) (3,-4)
 
Answer & Explanation Answer: A) (3,4)

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Q:

What is the value of Cot 60 - Sec 30?

A) -1/3 B) -1/√3
C) 1/√3 D) 1/3
 
Answer & Explanation Answer: B) -1/√3

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Q:

Raghu's tanker can fill a cistern in 4 hours. After half the cistern is filled, three more similar tankers are opened. What is the total time taken to fillthe cistern completely?

A) 2h 30 min B) 2h
C) 3h D) 2h 40 min
 
Answer & Explanation Answer: A) 2h 30 min

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Filed Under: Pipes and Cistern
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Q:

The vertical angle A of an isosceles triangle ΔABC is three times the angle B of it. The measure of the angle A is

A) 90° B) 108°
C) 100° D) 36°
 
Answer & Explanation Answer: B) 108°

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Q:

ΔABC is similar to ΔPQR. Length of AB is 18 cm and length of the corresponding side PQ is 12 cm. If area of ΔABC is 324 sq cm, what is the area of ΔPQR?

A) 72 sq cm B) 144 sq cm
C) 36 sq cm D) 487.5 sq cm
 
Answer & Explanation Answer: B) 144 sq cm

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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